Sash-balance.



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UNITED STATES PATENT OFFICE.

SASH-B ALANCE.

Specification of Letters Patent.

Patented Dec. 18, 1906.

Appli tion fil d January 18, 1906. Serial No. 296,689-

To ctZZ whom, it may concern.-

Be it known that 1, JAMES L. Bns'r, a citizen of the United States,resicing at Bremerton, inthe county of Kitsap and State of YVashington,have invented certain new and useful Improvements in Sash-Balances; andI do declare the following to be a full, clear, and eXact description ofthe invention, such as will enable others skilled in the art to which itappcrtains to make anal use the same.

My invention relates to improvements in balancing devices forwindow-sashes; and it consists of the novel construction, combination,and arrangement of devices hereinafter described and claimed.

The object of the invention is to provide a simple, inexpensive,durable, and efficient balancing device by means of which thewindow-sashes may be quickly and easily raised and lowered by turning ashaft conveniently arranged beneath the window-sill or at any othersuitable point.

The above and other objects, which will appear as the nature of myinvention is better understood, are accomplished by means of theconstruction illustrated in the accompanying drawings, in which Figure 1is a vertical longitudinal sectional view through a window-frame,showing my improvements applied thereto. Fig. 2 is a vertical transversesectional view taken on the line 2 2 in Fig. 1. Fig. 3 is a similarsectional view taken on the line 3 3 in Fig. 1, and Fig. 4 is ahorizontal sectional view taken on the line 4 4 in Fig. 1.

Referring to the drawings by numeral, 1

denotes a window-frame of the usual form and construction, in which aremounted upper and lower sliding sashes 2 3. These sashes arerespectively supported by pairs of cables 4 4 5 5, each of which has oneof its ends secured, as at 6, to one edge of one of the sashes, and uponits other end is a counterbalancingweight 7, which moves in the usualspace in the sides of the frame 1. These cords, wires, cables, or thelike 4 5 pass over suitable guide-pulleys and are adapted to becontrolled by an operating device 8, which is preferably mounted in theframe beneath the window-sill. This device or mechanism 8 comprises aframe or support 9, which is mounted within the window-casing and hasextending transversely through its center a main shaft 10. The latterhas its forward end extending through the front of the window-casingbeneath thewindow-sill, and secured upon it is a knob or handle 11 orany other suitable form of operating device. The shaft 10 is mounted torotate freely and to have a limited. longitudinal sliding movement inits bearings in the frame 9. This sliding movement is limited in onedirection by the inner end of the knob 11, which engages the outer faceof the window-casing, and in its opposite direction by a stop-collar 12,which is secured on the opposite end of the shaft by a cross-pin or thelike 13 and which is adapted to engage the outer face of the frame orsupport 9. This sliding movement of the shaft 10 is provided so as topermit a gear-wheel 14, which is secured upon it, to be moved into meshwith either one of two pinions 15 16, which are secured upon shafts 1718, mounted in the frame or support 9, as clearly shown in Fig. 4 of thedrawings.

Each of the shafts 8 has secured upon it a pair of grooved pulleys 19,around which the cords, wires, or cables 4 5 are twice Wound to permitthem to be actuated when the shafts 17 18 are rotated. Each of the cords4 has oneof its ends secured at 6 to the upper sash 2 and is passedfirst over a guidepulley 20 in the upper portion of the frame 1., thendownwardly around one of a series of pulleys 21, mounted beneath thelower ends of the frame, as shown in Fig. 3, then twice around one ofthe pulleys 19, then back around one of the pulleys 21 then upwardlyover a pulley 24, and has one of the Weights 7 secured upon itsdepending end. Each of the cords 5, which support the lower sash 3, hasone of its ends secured, as at 6, to one edge of said. sash and is thenpassed upwardly over a pulley 26 in the side of the frame, then downwardly over one of the pulleys 21, then inwardly and twice around one ofthe pulleys 19, then outwardly over another one of the pulleys 21, thenupwardly over a pulley 25, mounted in the frame, and has one of theweights 7 attached to its depending end. It will be observed uponreference to Fig. 4 that the two cords 4 are passed around the twopulleys upon the shaft 17 and that the two cords 5 are passed around thepulleys 19 on the shaft 18,- so that the movement of the shaft 17controls the upper sash and the movement of the shaft 18 controls thelower sash. By connecting and mounting the cords and pulleys in thismanner it will be seen that when the shaft 10 is pulled outwardly, sothat its gear 14 engages the pinion 15 and either direction to ei th rraise or lower plnion 16 and" the shaft 10 is rotated its movement willbe imparted to the shaft 18, so that the cords 5 will be operated tocause the lower sash3 tobe either raised or lowered.

From the foregoing description, taken in connection with theaccompanying drawings, the use and advantages of the inventionwill bereadily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the prin oiple orsacrificing any of the advantages of this invention as defined by theappended claim.

If desired, ball-bearings may be provided for the shafts of the guidepulleys or rollers and also for the shafts in the casing or frame 9.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The herein-described window-frame hav- L FE; ltf ig if J 2L it) it lldanr-i n il. rotated by means of the han-n in,' gtheiupper and lowerslidlng m iae sash 4, and that when the shaft is mo yged inwardly todisengage the gear 14 fi'fiffffilih P m'Qn am t engage the me rw hfihfii (Arlen-1s L J sashes and rtheupper an (loweru'd pulleys for each & ofah sh," t hs d p%oiting-frame beneath thel center of the window-frame,the

slidal il Eit'nd revoluble shaft mounted in said i rpert sqtra andhaving a sterna mo and a gear, operating-pulleys mounted in saidsupporting frame on opposite sides of said shaft, and each provided witha pinion, said pinions being out of alinement and adapted to bealternately engaged by the gear when the shaft is moved, and the cordseach having one end attached to one side of one of the sashes, thenpassed upwardly over one of-the upper guide-pulleys, then passeddownwardly under one of the lower guide-pulleys, then doubled and partlywound around one of the operating-pulleys, then passed under anotherlower guidepulley, upwardly to and over another upper guide-pulley andhaving a weight at its opposite end.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JAMES L. BEST. Witnesses:

ARTHUR HOLDEN JAMES EANDERsoN.

